rdf:type |
|
lifeskim:mentions |
umls-concept:C0004561,
umls-concept:C0021758,
umls-concept:C0023810,
umls-concept:C0024518,
umls-concept:C0040113,
umls-concept:C0051980,
umls-concept:C0205245,
umls-concept:C0368761,
umls-concept:C0456387,
umls-concept:C0936012,
umls-concept:C1413227
|
pubmed:issue |
1
|
pubmed:dateCreated |
1990-2-14
|
pubmed:abstractText |
The function of thymic B cells in several standard in vitro assays was investigated. Thymic B cells, 75% of which were CD5+, showed a poor responsiveness to the mitogens LPS or anti-mu plus IL-4. Both proliferation and antibody formation were much lower in thymic than splenic B cell cultures. However, CD5- B cells purified using a cell sorter responded well to B cell stimulants, whereas purified CD5+ thymic B cells did not, indicating that CD5+ thymic B cells were unresponsive to B cell growth factor or LPS. Thymic B cells could be activated polyclonally by direct interaction with alloreactive T blasts, as manifested by DNA synthesis and antibody formation. These findings indicate that CD5+ thymic B cells may not be stimulated via sIg and IL-4, but require instead direct interaction with T blasts.
|
pubmed:commentsCorrections |
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Jan
|
pubmed:issn |
0022-1007
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
1
|
pubmed:volume |
171
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
321-6
|
pubmed:dateRevised |
2009-11-18
|
pubmed:meshHeading |
pubmed-meshheading:1688610-Animals,
pubmed-meshheading:1688610-Antibodies, Monoclonal,
pubmed-meshheading:1688610-Antigens, CD5,
pubmed-meshheading:1688610-Antigens, Differentiation,
pubmed-meshheading:1688610-B-Lymphocytes,
pubmed-meshheading:1688610-Cells, Cultured,
pubmed-meshheading:1688610-Genes, MHC Class II,
pubmed-meshheading:1688610-Histocompatibility Antigens Class II,
pubmed-meshheading:1688610-Immunoglobulin M,
pubmed-meshheading:1688610-Interleukin-4,
pubmed-meshheading:1688610-Kinetics,
pubmed-meshheading:1688610-Lymphocyte Activation,
pubmed-meshheading:1688610-Mice,
pubmed-meshheading:1688610-Mice, Inbred C3H,
pubmed-meshheading:1688610-Mice, Inbred Strains,
pubmed-meshheading:1688610-T-Lymphocytes,
pubmed-meshheading:1688610-Thymus Gland
|
pubmed:year |
1990
|
pubmed:articleTitle |
Functional analyses of thymic CD5+ B cells. Responsiveness to major histocompatibility complex class II-restricted T blasts but not to lipopolysaccharide or anti-IgM plus interleukin 4.
|
pubmed:affiliation |
First Department of Pathology, Kansai Medical University, Osaka, Japan.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|